Grade 12th passAlgebra
if the sum of the series 2,5,8,11..... is 60100, then n is equal to??????
if the sum of the series 2,5,8,11..... is 60100, then n is equal to??????
6 Answers
aarthi s
Use the formula S=n/2[2a+(n-1)d]
substitute the values a=2, d=5-3 =2 & S=60100
Ans 200
mansi dabriwal
i think d should be 5-2=3
Shubham Singh
Approved Tutor Answer11 Years agon = 200
it is an AP with common difference 3.
mansi dabriwal
yah i got it...
Sujit Yadav
Approved Tutor Answer11 Years agoans 200
ng29
Approved Tutor Answer11 Years agoit is quite easy question
it is nothing but an increasin ap with a=2 d=3 and nth term is 60100
using an=a+(n-1)d an is the nth term
we get n=200
approve if useful
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